System-level performance study of interference alignment in cellular systems with base-station coordination
Cites result from "System-level performance study of i..."
...In contrast with some prior works on the system-level performance of IA, which relied on simulations over grid networks –, we set out to address the matter analytically in order to attain broader generality and more pronounced guidance in the conclusions....
Cites background from "System-level performance study of i..."
...Tempered by the considerations made in –, chiefly that the insights obtained from the K-user interference channel apply to large wireless networks only within a certain SNR range, IA is seen to retain the potential to play some role in the management of interference in pedestrian-oriented TDD wireless systems; that role, however, might be largely circumscribed to cell-edge users for which the interference channel is a reasonable model....
"System-level performance study of i..." refers methods in this paper
...First, the performance of IA is compared with the state-of-art baseline  using a coordinated beamforming scheme based on signal to leakage and noise ratio (SLNR) optimization....
...2) Coordinated Beamforing via (SLNR) We consider a state-of-art coordinated beamforming (CB) scheme based on a SLNR criterion ....
"System-level performance study of i..." refers background or methods in this paper
...1) Interference Alignment (IA) The IA based transmit precoding scheme , adjusts the interference space received at the ith UE, such that UE ith’s receiver has enough degrees-of-freedom to cancel this interference....
...We refer to  for a detailed description of the IA concept....
...Initial works (see for example ,  and references wherein) studied the behavior of IA under ideal assumptions, like Gaussian i....
...The receiver weights in  are calculated in order to satisfy the following conditions...
"System-level performance study of i..." refers background in this paper
...3) Type 3: MMSE with instantaneous interfeence covariance matrix estimation (MMSE-I) The well known Minimum Mean Square Error (MMSE) receiver based on an instantaneous estimation of the interference covariance matrix can be written as ...
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The results have shown that interference alignment is underperforming with respect to the baseline using base station coordination, when a realistic number of base stations is considered.